== sanity test 398c: run fio to test AIO ================= 17:55:33 (1777586133) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.431191 s, 97.3 MB/s osc.lustre-OST0000-osc-ffff8dc573893000.rpc_stats=clear writing 40M to OST0 by fio with 4 jobs... rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-write: (groupid=0, jobs=1): err= 0: pid=179791: Thu Apr 30 17:56:08 2026 write: IOPS=94, BW=379KiB/s (389kB/s)(10.0MiB/26989msec); 0 zone resets slat (usec): min=48, max=13651, avg=368.96, stdev=864.16 clat (msec): min=12, max=270, avg=167.60, stdev=29.41 lat (msec): min=13, max=270, avg=167.98, stdev=29.38 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 125], 10.00th=[ 133], 20.00th=[ 146], | 30.00th=[ 153], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 171], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 207], 95.00th=[ 220], | 99.00th=[ 249], 99.50th=[ 253], 99.90th=[ 262], 99.95th=[ 266], | 99.99th=[ 271] bw ( KiB/s): min= 253, max= 471, per=25.06%, avg=379.36, stdev=45.93, samples=53 iops : min= 63, max= 117, avg=94.42, stdev=11.43, samples=53 lat (msec) : 20=0.12%, 50=0.16%, 100=0.62%, 250=98.24%, 500=0.86% cpu : usr=0.23%, sys=1.62%, ctx=2979, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=179792: Thu Apr 30 17:56:08 2026 write: IOPS=95, BW=381KiB/s (390kB/s)(10.0MiB/26862msec); 0 zone resets slat (usec): min=45, max=12235, avg=357.56, stdev=816.59 clat (msec): min=17, max=266, avg=167.34, stdev=30.26 lat (msec): min=18, max=266, avg=167.71, stdev=30.24 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 123], 10.00th=[ 134], 20.00th=[ 144], | 30.00th=[ 153], 40.00th=[ 159], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 182], 80.00th=[ 190], 90.00th=[ 203], 95.00th=[ 222], | 99.00th=[ 249], 99.50th=[ 253], 99.90th=[ 262], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 261, max= 510, per=25.19%, avg=381.36, stdev=56.56, samples=53 iops : min= 65, max= 127, avg=94.91, stdev=14.11, samples=53 lat (msec) : 20=0.04%, 50=0.16%, 100=1.21%, 250=97.85%, 500=0.74% cpu : usr=0.19%, sys=1.34%, ctx=2898, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=179793: Thu Apr 30 17:56:08 2026 write: IOPS=94, BW=379KiB/s (388kB/s)(10.0MiB/27038msec); 0 zone resets slat (usec): min=42, max=10681, avg=312.67, stdev=695.88 clat (msec): min=40, max=276, avg=168.01, stdev=29.34 lat (msec): min=40, max=276, avg=168.33, stdev=29.31 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 126], 10.00th=[ 136], 20.00th=[ 144], | 30.00th=[ 153], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 174], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 209], 95.00th=[ 220], | 99.00th=[ 253], 99.50th=[ 259], 99.90th=[ 271], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 255, max= 473, per=24.99%, avg=378.36, stdev=50.47, samples=53 iops : min= 63, max= 118, avg=94.17, stdev=12.59, samples=53 lat (msec) : 50=0.08%, 100=0.23%, 250=98.36%, 500=1.33% cpu : usr=0.17%, sys=1.31%, ctx=2632, majf=0, minf=10 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=179794: Thu Apr 30 17:56:08 2026 write: IOPS=94, BW=379KiB/s (388kB/s)(10.0MiB/27048msec); 0 zone resets slat (usec): min=43, max=18911, avg=306.09, stdev=785.37 clat (msec): min=43, max=252, avg=167.91, stdev=28.26 lat (msec): min=43, max=252, avg=168.22, stdev=28.25 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 126], 10.00th=[ 136], 20.00th=[ 144], | 30.00th=[ 153], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 174], | 70.00th=[ 182], 80.00th=[ 190], 90.00th=[ 205], 95.00th=[ 222], | 99.00th=[ 241], 99.50th=[ 243], 99.90th=[ 251], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 236, max= 509, per=24.88%, avg=376.74, stdev=53.93, samples=53 iops : min= 59, max= 127, avg=93.75, stdev=13.43, samples=53 lat (msec) : 50=0.08%, 100=0.23%, 250=99.57%, 500=0.12% cpu : usr=0.20%, sys=1.26%, ctx=2416, majf=0, minf=10 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): WRITE: bw=1514KiB/s (1551kB/s), 379KiB/s-381KiB/s (388kB/s-390kB/s), io=40.0MiB (41.9MB), run=26862-27048msec mix rw 40M to OST0 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179808: Thu Apr 30 17:56:42 2026 read: IOPS=47, BW=191KiB/s (196kB/s)(5048KiB/26400msec) slat (usec): min=56, max=42287, avg=11244.30, stdev=5569.49 clat (msec): min=55, max=282, avg=155.76, stdev=36.83 lat (msec): min=67, max=309, avg=167.02, stdev=38.37 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 100], 10.00th=[ 111], 20.00th=[ 126], | 30.00th=[ 138], 40.00th=[ 146], 50.00th=[ 155], 60.00th=[ 163], | 70.00th=[ 171], 80.00th=[ 184], 90.00th=[ 205], 95.00th=[ 220], | 99.00th=[ 262], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 112, max= 295, per=25.28%, avg=190.60, stdev=38.94, samples=52 iops : min= 28, max= 73, avg=47.19, stdev= 9.72, samples=52 write: IOPS=49, BW=197KiB/s (201kB/s)(5192KiB/26400msec); 0 zone resets slat (usec): min=53, max=18653, avg=353.74, stdev=922.11 clat (msec): min=40, max=295, avg=162.23, stdev=33.45 lat (msec): min=40, max=295, avg=162.59, stdev=33.46 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 111], 10.00th=[ 123], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 207], 95.00th=[ 218], | 99.00th=[ 243], 99.50th=[ 251], 99.90th=[ 275], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 118, max= 288, per=24.96%, avg=195.96, stdev=37.27, samples=52 iops : min= 29, max= 72, avg=48.54, stdev= 9.36, samples=52 lat (msec) : 50=0.12%, 100=3.67%, 250=95.23%, 500=0.98% cpu : usr=0.33%, sys=2.28%, ctx=4852, majf=0, minf=13 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1262,1298,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179809: Thu Apr 30 17:56:42 2026 read: IOPS=46, BW=187KiB/s (192kB/s)(4976KiB/26570msec) slat (usec): min=2730, max=37535, avg=11451.56, stdev=5585.67 clat (msec): min=22, max=271, avg=157.13, stdev=36.35 lat (msec): min=34, max=289, avg=168.59, stdev=37.49 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 102], 10.00th=[ 112], 20.00th=[ 128], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 157], 60.00th=[ 165], | 70.00th=[ 174], 80.00th=[ 186], 90.00th=[ 205], 95.00th=[ 222], | 99.00th=[ 251], 99.50th=[ 257], 99.90th=[ 262], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 104, max= 269, per=24.70%, avg=186.23, stdev=34.10, samples=52 iops : min= 26, max= 67, avg=46.10, stdev= 8.48, samples=52 write: IOPS=49, BW=198KiB/s (203kB/s)(5264KiB/26570msec); 0 zone resets slat (usec): min=43, max=11929, avg=357.57, stdev=760.09 clat (msec): min=55, max=287, avg=162.08, stdev=33.59 lat (msec): min=55, max=287, avg=162.44, stdev=33.60 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 110], 10.00th=[ 122], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 161], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 207], 95.00th=[ 218], | 99.00th=[ 247], 99.50th=[ 255], 99.90th=[ 268], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 119, max= 320, per=25.25%, avg=198.19, stdev=44.40, samples=52 iops : min= 29, max= 80, avg=49.10, stdev=11.16, samples=52 lat (msec) : 50=0.04%, 100=3.71%, 250=95.39%, 500=0.86% cpu : usr=0.24%, sys=2.38%, ctx=4802, majf=0, minf=14 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1244,1316,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179810: Thu Apr 30 17:56:42 2026 read: IOPS=46, BW=188KiB/s (192kB/s)(4984KiB/26554msec) slat (usec): min=2499, max=36135, avg=11203.48, stdev=5280.35 clat (msec): min=63, max=283, avg=156.53, stdev=37.39 lat (msec): min=71, max=301, avg=167.74, stdev=38.75 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 101], 10.00th=[ 112], 20.00th=[ 125], | 30.00th=[ 136], 40.00th=[ 146], 50.00th=[ 155], 60.00th=[ 163], | 70.00th=[ 176], 80.00th=[ 186], 90.00th=[ 207], 95.00th=[ 222], | 99.00th=[ 262], 99.50th=[ 268], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 120, max= 295, per=24.86%, avg=187.48, stdev=45.14, samples=52 iops : min= 30, max= 73, avg=46.42, stdev=11.24, samples=52 write: IOPS=49, BW=198KiB/s (203kB/s)(5256KiB/26554msec); 0 zone resets slat (usec): min=52, max=11137, avg=372.77, stdev=810.96 clat (msec): min=76, max=282, avg=162.23, stdev=32.51 lat (msec): min=76, max=282, avg=162.61, stdev=32.49 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 113], 10.00th=[ 123], 20.00th=[ 134], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 161], 60.00th=[ 167], | 70.00th=[ 178], 80.00th=[ 188], 90.00th=[ 205], 95.00th=[ 220], | 99.00th=[ 255], 99.50th=[ 268], 99.90th=[ 275], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 111, max= 271, per=25.10%, avg=197.00, stdev=38.56, samples=52 iops : min= 27, max= 67, avg=48.81, stdev= 9.68, samples=52 lat (msec) : 100=3.24%, 250=95.47%, 500=1.29% cpu : usr=0.31%, sys=2.30%, ctx=4829, majf=0, minf=14 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1246,1314,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179811: Thu Apr 30 17:56:42 2026 read: IOPS=47, BW=190KiB/s (195kB/s)(5060KiB/26600msec) slat (usec): min=3001, max=52100, avg=11205.83, stdev=5792.48 clat (msec): min=62, max=325, avg=156.47, stdev=35.83 lat (msec): min=69, max=345, avg=167.69, stdev=37.10 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 103], 10.00th=[ 113], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 146], 50.00th=[ 155], 60.00th=[ 163], | 70.00th=[ 174], 80.00th=[ 188], 90.00th=[ 203], 95.00th=[ 218], | 99.00th=[ 245], 99.50th=[ 253], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 119, max= 311, per=25.17%, avg=189.81, stdev=39.55, samples=52 iops : min= 29, max= 77, avg=46.98, stdev= 9.89, samples=52 write: IOPS=48, BW=195KiB/s (199kB/s)(5180KiB/26600msec); 0 zone resets slat (usec): min=55, max=10810, avg=369.73, stdev=701.12 clat (msec): min=82, max=293, avg=162.57, stdev=33.76 lat (msec): min=82, max=293, avg=162.95, stdev=33.74 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 110], 10.00th=[ 121], 20.00th=[ 133], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 207], 95.00th=[ 218], | 99.00th=[ 245], 99.50th=[ 257], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 95, max= 288, per=24.68%, avg=193.73, stdev=39.01, samples=52 iops : min= 23, max= 72, avg=47.98, stdev= 9.73, samples=52 lat (msec) : 100=3.63%, 250=95.62%, 500=0.74% cpu : usr=0.29%, sys=2.25%, ctx=4869, majf=0, minf=15 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1265,1295,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=754KiB/s (773kB/s), 187KiB/s-191KiB/s (192kB/s-196kB/s), io=19.6MiB (20.5MB), run=26400-26600msec WRITE: bw=785KiB/s (804kB/s), 195KiB/s-198KiB/s (199kB/s-203kB/s), io=20.4MiB (21.4MB), run=26400-26600msec AIO with large block size 40M rand-rw: (g=0): rw=randrw, bs=(R) 40.0MiB-40.0MiB, (W) 40.0MiB-40.0MiB, (T) 40.0MiB-40.0MiB, ioengine=libaio, iodepth=16 fio-3.19 Starting 1 process rand-rw: (groupid=0, jobs=1): err= 0: pid=179818: Thu Apr 30 17:56:50 2026 read: IOPS=2, BW=92.8MiB/s (97.3MB/s)(40.0MiB/431msec) slat (nsec): min=19744k, max=19744k, avg=19744111.00, stdev= 0.00 clat (nsec): min=392478k, max=392478k, avg=392477931.00, stdev= 0.00 lat (nsec): min=412227k, max=412227k, avg=412226854.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.79%, ctx=3, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=92.8MiB/s (97.3MB/s), 92.8MiB/s-92.8MiB/s (97.3MB/s-97.3MB/s), io=40.0MiB (41.9MB), run=431-431msec debug=trace inode super iotrace malloc cache info ioctl neterror net warning buffs other dentry nettrace page dlmtrace error emerg ha rpctrace vfstrace reada mmap config console quota sec lfsck hsm snapshot layout